Hi. Great Question. Your pension is taxable, but not "taxed", due to your being under the 11,700 mark in taxable income (income after the standard deduction and exemptions).
I would note to keep your part-time job income under $16,033, since your social security will then be taxed if you make income over $25k in total (Pension of $8.967 + $16,033). You would still need to pay a little taxes, though (10%).
If you make between $25,000 and $34,000, you have to pay income tax on up to 50% of your Social Security benefits.
Standard deduction is currently $6,300 (single) and personal exemption is $4,050. If you make $11,070 in taxable income, you are not taxed. If you do not want any taxes, you would have to make around under $12.5k (11,070+6,300+4,050- 8,967) from your part time job.